fix float division by zero bug in score calculation
fix float division by zero bug in score calculation

framasoft/searx,pointhi/searx,jibe-b/searx,potato/searx,dzc34/searx,GreenLunar/searx,jcherqui/searx,jibe-b/searx,dzc34/searx,matejc/searx,dalf/searx,asciimoo/searx,framasoft/searx,gugod/searx,matejc/searx,PwnArt1st/searx,asciimoo/searx,framasoft/searx,misnyo/searx,jibe-b/searx,matejc/searx,potato/searx,jibe-b/searx,potato/searx,gugod/searx,GreenLunar/searx,kdani3/searx,dzc34/searx,matejc/searx,dalf/searx,PwnArt1st/searx,GreenLunar/searx,jcherqui/searx,jcherqui/searx,potato/searx,misnyo/searx,PwnArt1st/searx,asciimoo/searx,misnyo/searx,gugod/searx,misnyo/searx,pointhi/searx,pointhi/searx,dalf/searx,kdani3/searx,GreenLunar/searx,jpope777/searx,dzc34/searx,kdani3/searx,kdani3/searx,jpope777/searx,gugod/searx,dalf/searx,pointhi/searx,jpope777/searx,asciimoo/searx,jcherqui/searx,framasoft/searx,PwnArt1st/searx,jpope777/searx